Re: Is C++ used in life-critical systems?

"Balog Pal" <>
Tue, 21 Dec 2010 09:57:27 +0100
"Ian Collins" <>

I wonder who would ask for a crippled version of C++? Surely not
someone with an existing C++ code base, and surely not someone with
an existing C code base who wants to move to C++.

Why not? Depends on what is left out. You do not need many features in
the embedded world. You do not need your codebase written for
desktop/server stuff either.

That depends on your definition of embedded. My last embedded project
used Linux and was maintained by a team of 50.

Sure. :) I would not call that 'embedded' in *this* context, as in my head
it maps to something like the hosted/freestanding distinction in the C/C++
standard. We have cards and boxes that have a full PC built in, with OS --
to me writing stuff there is not very different to wrtite for similar
hardware that is installed in a midi-tower case. And stripping the
keyboard and monitor does not make a difference either.

The team size also have IMO little relevance ot embeddedness :) and it can
be natural that more effort is needed to cover features that otherwise are
supplied by the OS (or some stock library fitting the environment out of the

I would not cry if there was no standard lib either -- if templates are
supported so I can import my own library or any stl portions I'd happen
to like.

Templates are another feature left out for "efficiency" reasons.

For me a teplate-stripped version is no longer C++. What then we have over
C99(*) really? Member functions? That is not such a big deal alone,
easily worked around with "python style".

(*) or its approximation called 'Gnu C', that is available in gcc --
supporting inline and variables mixed with code.

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